Acti 9 iPRF1, PRD1

Surge Protection Devices Type 1 or Type 1+2.

Part of TeSys

Surge Arresters Type 1 or Surge Arresters Type 1+2, compliant with IEC/EN 61643-11:2011.

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Acti 9 iPRF1, PRD1 Type 1 Surge Protection Devices protect the electrical equipments against the direct lightning strikes.

The installation of Type 1 or Type 1+2 Surge Arresters is compulsory whenever there is a lightning rod.

They are tested and rated according to the standardised current wave of 10/350 μs.

  • Impulse discharge current Iimp:

  • 12.5 kA for iPRF1 12.5r is suitable for buildings with protection levels III and IV.

  • 25 kA for PRD1 25r and 35 kA for PRD1 Master are suitable for buildings with protection levels I and II.

  • These Surge Arresters are available either as monobloc or with pluggable cartridges.

  • These ranges cover all the different earthing system: multiple-pole or single-pole devices to be assembled.

  • They come with ouput contacts for remote transfer of end-of-life information (for Acti 9 Smartlink or other input/output devices).

  • iPRF1 12.5r and PRD1 25r are also Type 2 rated (8/20 µs) to protect the electrical equipment by finely clipping the voltage surge.

  • They are suitable for 230/400 V 50/60 Hz networks, with earthing system TT, TN-S, TN-C.

  • PRD1 Master is also suitable for 440 V IT earthing system.


These two SPD Type 1 ranges provide:

  • Powerful Surge Protection for installations and buildings with high lightning strike risk.

  • Ensure the continuity of service of your installation.

  • PRD1 Surge Arresters are fitted with easy-to-replace pluggable cartridges.

  • Beware the lightning rod is not sufficient as a protection, Type 1 Surge Protection Devices contribute to the safety of your equipments.


Acti 9 iPRF1, PRD1 Type 1 Surge Protection Devices protect the electrical installations against induced or conducted surges caused by direct lightning strikes:

  • The IEC/EN 62305-2 specifies the use of Type 1 or Type 1+2 Surge Protection Devices in commercial and industrial buildings protected by a lightning conductor or a lightning rod.

  • Surge Protection Devices are recommended when there is higher risk of direct lightning strikes..